O/Cing my 2500+

[thehunter1320]

i have a stick of 512MB RAM that has a FSB of 333, and my 2500+ is not O/Ced... if i want to O/C it to 3200+ speeds and for it to show up as a 3200+ on my PC, is there anything special i'd need to do besides raise the clock? and would i need a stick of 400 in order for it to show up as a 3200+?

 

[hjo3]

The 2500+ normally runs @ 1.83 GHz, the 3200+ runs @ 2.2 GHz. Assuming you have a Barton (that is, the CPU runs at an FSB of 333 MHz), your normal setup should be a multiplier of 5.5 and normal 333 FSB. To get to 2.2 GHz, you don't need to raise the FSB, just the multiplier (assuming your setup lets you). A multiplier of 6.5 ought to give you the rough equivalent of a 3200+ @ 2.16 GHz. You shouldn't need to change your RAM, but make sure you have very good cooling for your CPU.

 

[thehunter1320]

Originally posted by: hjo3
The 2500+ normally runs @ 1.83 GHz, the 3200+ runs @ 2.2 GHz. Assuming you have a Barton (that is, the CPU runs at an FSB of 333 MHz), your normal setup should be a multiplier of 5.5 and normal 333 FSB. To get to 2.2 GHz, you don't need to raise the FSB, just the multiplier (assuming your setup lets you). A multiplier of 6.5 ought to give you the rough equivalent of a 3200+ @ 2.16 GHz. You shouldn't need to change your RAM, but make sure you have very good cooling for your CPU.

will this make it show up as a 3200+, do you know?

 

[hjo3]

Originally posted by: thehunter1320
will this make it show up as a 3200+, do you know?

Not totally sure. AFAIK, the actual 3200+ uses a 400 MHz FSB with a 5.5 multiplier. But upping your clock by 50 MHz is kind of dangerous, since it would affect your PCI cards and RAM. The 333x6.5 would basically give you the same performance though, which is usually the purpose of OCing.

 

[thehunter1320]

Originally posted by: hjo3

Originally posted by: thehunter1320
will this make it show up as a 3200+, do you know?

Not totally sure. AFAIK, the actual 3200+ uses a 400 MHz FSB with a 5.5 multiplier. But upping your clock by 50 MHz is kind of dangerous, since it would affect your PCI cards and RAM. The 333x6.5 would basically give you the same performance though, which is usually the purpose of OCing.

well, i just tried having it on a 333x6.5, and the PC wouldn't boot, the BIOS told me that the CPU "hung up" with the new settings... is it because my RAM and Mobo can only handle 333?

 

[Ionizer86]

Um, the 2500+ is 166 * 11, and the 3200+ is 200 * 11. When we speak of the fsb frequencies, we measure the speed before the double data rate. Don't set the bus that high far beyond 200.

 

[NokiaDude]

First off the RAM is limiting your O/C. Second off, is AGP/PCI lock enabled? Third, that chipset on the motherboard is limited to a 333FSB.

 

[Brian48]

My Barton 2500+ is overclocked at 11x200. It boots up as a "3200XP" in the BIOS splash and is also identified as a 3200XP under WinXP.

 

[thehunter1320]

well, i just recovered from my last OC attempt... i got it clocked at 3200+ speeds... but i guess either the processor or RAM overheated, cause my PC crashed and has just now decided to turn on... after 7 hours

am i screwed unless i get faster RAM? or should i just get better cooling?

 

[jcwagers]

Well, some processors need a bit of a voltage boost to hit 3200+ speeds. If you're running at 166fsb, you'll need a multiplier of 13 for 2158mhz or 13.5 for 2241. If you're running at 1.65v, which is stock, you might try 1.70 volts. You can experiment on up but most people recommend keeping the voltage at or below 1.8 volts. How is your cooling? Are you running a stock heatsink and fan? Do you have case fans? How many? How are they set? These are all questions you may need to answer to get more help.

jc

btw.....you might want to list your complete system specs. There are a lot of knowledgeable people on here but they need to know specifics. They may know of quirkiness in a certain motherboard or have some experience with flakey ram, etc......

 

[Chopstick217]

You wouldnt need pc 3200 to run your cpu at 400 fsb. Anyways, try increasing your voltage by incridments of .05volts until you system runs stable. Run prime 95 and memtest-86 to test for stability. Equally important, do you have agp/pci lock?